Address Q000 in oidc-exchange.py

oidc-exchange.py

@@ -109,26 +109,26 @@
 
 
 def die(msg: str) -> NoReturn:
-    with _GITHUB_STEP_SUMMARY.open("a", encoding="utf-8") as io:
+    with _GITHUB_STEP_SUMMARY.open('a', encoding='utf-8') as io:
         print(_ERROR_SUMMARY_MESSAGE.format(message=msg), file=io)
 
     # HACK: GitHub Actions' annotations don't work across multiple lines naively;
     # translating `\n` into `%0A` (i.e., HTML percent-encoding) is known to work.
     # See: https://github.com/actions/toolkit/issues/193
-    msg = msg.replace("\n", "%0A")
-    print(f"::error::Trusted publishing exchange failure: {msg}", file=sys.stderr)
+    msg = msg.replace('\n', '%0A')
+    print(f'::error::Trusted publishing exchange failure: {msg}', file=sys.stderr)
     sys.exit(1)
 
 
 def debug(msg: str):
-    print(f"::debug::{msg.title()}", file=sys.stderr)
+    print(f'::debug::{msg.title()}', file=sys.stderr)
 
 
 def get_normalized_input(name: str) -> str | None:
-    name = f"INPUT_{name.upper()}"
+    name = f'INPUT_{name.upper()}'
     if val := os.getenv(name):
         return val
-    return os.getenv(name.replace("-", "_"))
+    return os.getenv(name.replace('-', '_'))
 
 
 def assert_successful_audience_call(resp: requests.Response, domain: str):
@@ -140,81 +140,81 @@ def assert_successful_audience_call(resp: requests.Response, domain: str):
             # This index supports OIDC, but forbids the client from using
             # it (either because it's disabled, ratelimited, etc.)
             die(
-                f"audience retrieval failed: repository at {domain} has trusted publishing disabled",
+                f'audience retrieval failed: repository at {domain} has trusted publishing disabled',
             )
         case HTTPStatus.NOT_FOUND:
             # This index does not support OIDC.
             die(
-                "audience retrieval failed: repository at "
-                f"{domain} does not indicate trusted publishing support",
+                'audience retrieval failed: repository at '
+                f'{domain} does not indicate trusted publishing support',
             )
         case other:
             status = HTTPStatus(other)
             # Unknown: the index may or may not support OIDC, but didn't respond with
             # something we expect. This can happen if the index is broken, in maintenance mode,
             # misconfigured, etc.
             die(
-                "audience retrieval failed: repository at "
-                f"{domain} responded with unexpected {other}: {status.phrase}",
+                'audience retrieval failed: repository at '
+                f'{domain} responded with unexpected {other}: {status.phrase}',
             )
 
 
 def render_claims(token: str) -> str:
-    _, payload, _ = token.split(".", 2)
+    _, payload, _ = token.split('.', 2)
 
     # urlsafe_b64decode needs padding; JWT payloads don't contain any.
     payload += "=" * (4 - (len(payload) % 4))
     claims = json.loads(base64.urlsafe_b64decode(payload))
 
     def _get(name: str) -> str:  # noqa: WPS430
-        return claims.get(name, "MISSING")
+        return claims.get(name, 'MISSING')
 
     return _RENDERED_CLAIMS.format(
-        sub=_get("sub"),
-        repository=_get("repository"),
-        repository_owner=_get("repository_owner"),
-        repository_owner_id=_get("repository_owner_id"),
-        job_workflow_ref=_get("job_workflow_ref"),
-        ref=_get("ref"),
+        sub=_get('sub'),
+        repository=_get('repository'),
+        repository_owner=_get('repository_owner'),
+        repository_owner_id=_get('repository_owner_id'),
+        job_workflow_ref=_get('job_workflow_ref'),
+        ref=_get('ref'),
     )
 
 
 def event_is_third_party_pr() -> bool:
     # Non-`pull_request` events cannot be from third-party PRs.
-    if os.getenv("GITHUB_EVENT_NAME") != "pull_request":
+    if os.getenv('GITHUB_EVENT_NAME') != 'pull_request':
         return False
 
-    event_path = os.getenv("GITHUB_EVENT_PATH")
+    event_path = os.getenv('GITHUB_EVENT_PATH')
     if not event_path:
         # No GITHUB_EVENT_PATH indicates a weird GitHub or runner bug.
-        debug("unexpected: no GITHUB_EVENT_PATH to check")
+        debug('unexpected: no GITHUB_EVENT_PATH to check')
         return False
 
     try:
         event = json.loads(Path(event_path).read_bytes())
     except json.JSONDecodeError:
-        debug("unexpected: GITHUB_EVENT_PATH does not contain valid JSON")
+        debug('unexpected: GITHUB_EVENT_PATH does not contain valid JSON')
         return False
 
     try:
-        return event["pull_request"]["head"]["repo"]["fork"]
+        return event['pull_request']['head']['repo']['fork']
     except KeyError:
         return False
 
 
-repository_url = get_normalized_input("repository-url")
+repository_url = get_normalized_input('repository-url')
 repository_domain = urlparse(repository_url).netloc
-token_exchange_url = f"https://{repository_domain}/_/oidc/mint-token"
+token_exchange_url = f'https://{repository_domain}/_/oidc/mint-token'
 
 # Indices are expected to support `https://{domain}/_/oidc/audience`,
 # which tells OIDC exchange clients which audience to use.
-audience_url = f"https://{repository_domain}/_/oidc/audience"
+audience_url = f'https://{repository_domain}/_/oidc/audience'
 audience_resp = requests.get(audience_url)
 assert_successful_audience_call(audience_resp, repository_domain)
 
-oidc_audience = audience_resp.json()["audience"]
+oidc_audience = audience_resp.json()['audience']
 
-debug(f"selected trusted publishing exchange endpoint: {token_exchange_url}")
+debug(f'selected trusted publishing exchange endpoint: {token_exchange_url}')
 
 try:
     oidc_token = id.detect_credential(audience=oidc_audience)
@@ -229,7 +229,7 @@ def event_is_third_party_pr() -> bool:
 # Now we can do the actual token exchange.
 mint_token_resp = requests.post(
     token_exchange_url,
-    json={"token": oidc_token},
+    json={'token': oidc_token},
 )
 
 try:
@@ -246,9 +246,9 @@ def event_is_third_party_pr() -> bool:
 # On failure, the JSON response includes the list of errors that
 # occurred during minting.
 if not mint_token_resp.ok:
-    reasons = "\n".join(
-        f"* `{error['code']}`: {error['description']}"
-        for error in mint_token_payload["errors"]
+    reasons = '\n'.join(
+        f'* `{error['code']}`: {error['description']}'
+        for error in mint_token_payload['errors']
     )
 
     rendered_claims = render_claims(oidc_token)
@@ -260,12 +260,12 @@ def event_is_third_party_pr() -> bool:
         ),
     )
 
-pypi_token = mint_token_payload.get("token")
+pypi_token = mint_token_payload.get('token')
 if pypi_token is None:
     die(_SERVER_TOKEN_RESPONSE_MALFORMED_MESSAGE)
 
 # Mask the newly minted PyPI token, so that we don't accidentally leak it in logs.
-print(f"::add-mask::{pypi_token}", file=sys.stderr)
+print(f'::add-mask::{pypi_token}', file=sys.stderr)
 
 # This final print will be captured by the subshell in `twine-upload.sh`.
 print(pypi_token)